Plug-in insect trap



FIG. 1 is a perspective view of a plug-in insect trap showing an embodiment of our new design.

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines show environmental features and form no part of the claimed design. 

CLAIM The ornamental design for a plug-in insect trap, as shown and described. 